For a little over a year we've run a cluster with Server 2003 32bit machines\nwith quad processors and 32 GB of hot swapable ram. According to\n[URL]http://support.microsoft.com/kb/283037[/URL] the /PAE switch is not required in the\nboot.ini for applications that can use the ram to get access to it. In this\ncase it is SQL 2000. We've run fine without that switch since September 2006.\nToday we noticed these machine were only reporting 3.5 GB of RAM in system\nmanager. However when the machines boot the system clearly reports all 32 GB.\n\nTo fix the problem I added the /PAE switch and rebooted the passive node and\nnow Windows reports 32GB. Has something changed, perhaps a recent update,\nthat has changed or required this behavior. We last performed updates on\n12/28.